Precursors

In chemistry, a precursor is a compound that participates in a chemical reaction that produces another compound.

Ammonium hexachloroiridate(IV) is a precursor for Ir containing catalysts

Ruthenium(III) nitrosylnitrate solution is a Ru Catalyst precursor and is used as a solar cell catalyst

Rhodium(III) chloride hydrate is a Rh catalyst precursor

Rhodium lodide is a Rh carbonylation catalyst precursor